Answer:
Explanation:
<u>1) Determine the molar mass of the heptane</u>
element # of atoms atomic mass total mass
C 7 12.011 g/mol 7×12.011 g/mol = 84.077 g/mol
H 16 1.008 g/mol 16×1.008 g/mol = 16.128 g/mol
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Molar mass = 100.205 g/mol
<u>2) Percent of carbon, %</u>
- % = (mass of element / molar mass )×100
= (84.077 g/mol / 100.205 g/mol )×100 = 83.83 %
- Round to two significant figures: 84% ← answer
Answer:
A. CuCN
B. Sr(OCl)2
C. HBrO4
D. HI
E. Na2NH4PO4
F. KH2PO4
G. IF7
H. P4S10
I. HgO
J. Hg2I2
K. SeF6
Explanation:
All have different valent cation and anions like mono di and poly valent ions
There would be no net movement of glucose
The given statement is wrong. Glucose solutions are not electrolytes and therefore do not conduct electricity.
Is sodium chloride a good conductor of electricity? Simply by dissolving or dissolving it in water, it cannot conduct electricity as a solid.
Saline contains Na+ and Cl- ions. If ions are present in the solution, these ions can move through the solution and carry an electric current. Pure water and sugar solutions do not contain significant ions. Sugar molecules do not break down into ions when dissolved.
When glucose is added to water, it dissolves readily but does not dissociate into ions. Therefore, a glucose solution is not an electrolyte and is not a conductor of electricity.
Substances that dissolve in water to form a conductive solution are called electrolytes. Substances that dissolve in non-conductive solutions are called non-electrolytes. All soluble ionic compounds are electrolytes.
Learn more about glucose here;
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Answer:
A. 3
Explanation:
Given
The atomic radius of Hydrogen rH = 53 pm
The atomic radius of Uranium rU = 156 pm
we apply
rU / rH = 156 pm / 53 pm
⇒ rU / rH = 2.943 ≈ 3
then
rU = 3*rH
